Hanifah, Iffatul (2024) SINTESIS NANOPARTIKEL MAGNETIK Fe3O4 DILAPISI PEG DENGAN METODE KOPRESIPITASI SEBAGAI FOTOKATALIS ZAT WARNA METHYLENE BLUE (MB). S1 thesis, UNIVERSITAS SULTAN AGENG TIRTAYASA.
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Abstract
Fe3O4 and Fe3O4@PEG magnetic nanoparticles with varying mass concentrations (4:1), (3:1), (2:1) and (1:1) were successfully synthesized using the coprecipitation method to determine the effectiveness of the coprecipitation method on morphology and crystal size. and lattice parameters of Fe3O4@PEG nanoparticles, and determine the effect of long UV light irradiation time from nanoparticles in degrading methylene blue (MB) dye. The sample was made in two stages, namely making Fe3O4 nanoparticles using FeCl3.6H2O and FeSO4.7H2O precursors and NH4OH as a precipitating agent, then coating Fe3O4 using PEG-4000. The samples were characterized using XRD, FTIR, TEM, SEM, VSM and UV-Vis. The XRD results showed that the nanoparticle structure was in the form of inverse cubic spinel, diffraction peak adjustments were carried out based on JCPDS standard No.19-0629 and COD No.96-722-811. The characteristic feature of the Fe3O4 crystal structure is cubic spinel which is successfully formed by the presence of Fe-O bonds as well as –OH and C-O bonds in the Fe3O4@PEG sample. The TEM diffraction pattern formed cubic spinel with a polycrystalline structure and a particle size distribution was obtained that decreased with increasing PEG-4000 concentration. The SEM results show that the shape of the nanoparticles is round (spherical) and relatively uniform. The VSM results show that the coercivity field value increases but is not significant, while the saturation magnetization and remanence magnetization values decrease. Optimal methylene blue removal photodegradation efficiency for a variety of Fe3O4 samples without the addition of PEG, achieving 47,31 % degradation in 2 hours for uptake every 40 minutes.
| Item Type: | Thesis (S1) | |||||||||
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| Additional Information: | Nanopartikel magnetik Fe3O4 dan Fe3O4@PEG dengan variasi konsentrasi massa (4:1), (3:1), (2:1) dan (1:1) berhasil disintesis dengan menggunakan metode kopresipitasi untuk mengetahui keefektifan metode kopresipitasi terhadap morfologi, ukuran kristal dan parameter kisi dari nanopartikel Fe3O4@PEG, serta mengetahui pengaruh waktu kontak iradiasi sinar UV dari nanopartikel dalam mendegradasi zat warna methylene blue (MB). Sampel dibuat melalui dua tahapan yaitu pembuatan nanopartikel Fe3O4 menggunakan perkusor FeCl3.6H2O dan FeSO4.7H2O serta NH4OH sebagai agen pengendap, kemudian pelapisan Fe3O4 menggunakan PEG-4000. Sampel dikarakterisasi menggunakan alat XRD, FTIR, TEM, SEM, VSM dan UV-Vis. Hasil XRD menunjukkan struktur nanopartikel berbentuk kubik spinel invers, penyesuaian puncak difraksi dilakukan berdasarkan standar JCPDS No.19-0629 dan COD No.96-722-811, ciri khas struktur kristal Fe3O4 yaitu spinel kubik yang berhasil terbentuk dengan adanya ikatan Fe-O serta ikatan –OH dan C-O pada sampel Fe3O4@PEG. Pola difraksi hasil TEM membentuk spinel kubik dengan struktur polikristal dan diperoleh distribusi ukuran partikel yang menurun seiring dengan bertambahnya konsentrasi PEG-4000. Hasil SEM menunjukkan bentuk nanopartikel yaitu bulat (spheris) dan tergolong seragam. Hasil VSM menunjukkan bahwa nilai medan koersivitas semakin meningkat namun tidak signifikan, sedangkan nilai magnetisasi saturasi dan magnetisasi remanen menurun. Efisiensi fotodegradasi penghilangan methylene blue optimal untuk variasi sampel Fe3O4 tanpa penambahan PEG, mencapai degradasi sebesar 47,31% dalam waktu 2 jam untuk serapan setiap 40 menit. | |||||||||
| Uncontrolled Keywords: | Fe3O4@PEG-4000, coprecipitation method, photocatalyst, degradation, methylene blue. Fe3O4@PEG-4000, metode kopresipitasi, fotokatalis, degradasi, zat warna metilen biru | |||||||||
| Subjects: | L Education > L Education (General) Q Science > QC Physics |
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| Divisions: | 02-Fakultas Keguruan dan Ilmu Pendidikan > 84203-Jurusan Pendidikan Fisika 02-Fakultas Keguruan dan Ilmu Pendidikan |
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| Depositing User: | Mrs Iffatul Hanifah | |||||||||
| Date Deposited: | 04 Jun 2024 10:50 | |||||||||
| Last Modified: | 04 Jun 2024 10:50 | |||||||||
| URI: | http://eprints.untirta.ac.id/id/eprint/35621 |
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